Mystery Cauldrons of Siberia

In an isolated region of Siberia known as the Valley of Death, there are stories of strange metal objects buried in the ground.  The nomadic tribes of the area who first encountered them centuries ago called these metallic structures “cauldrons.”   The exact nature and purpose of these cauldrons are a mystery.  Some stories say that they were caused by frequent meteorites of the area, some believe that the objects are alien in nature.  Could these objects be parts of space ships, or part of some underground base or structure?  Or are they all just a folk story, and the cauldrons don’t actually exist at all?  This episode will detail possible answers to these questions, as well as detailing the history of these mysterious cauldrons buried in the Valley of Death.